hotchkiss



(No Model.) @sheets-sheet 1.

y Z. P. HOTCHKISS.-

y TELBGRAPHY. 246.

Patented Apr. 17, 188,8.

Wzzn'asvsas lUNITFD STATES PATFNT OFFICE. 1

zFROr P. HOToHKIss, OF OAK PARK,y ILLINOIS, ASSIG'NOROF ONE-FOURTFI 'yrro CARLOS .L WARD, OF SAME FLAOE.

f, l yrr-zLEGmuil-rv.

sPncIr-IGATION frming parser Letters Patent N o. 381,24;eatea April 17,1ere..A

Application filed February 14, 1887. Serial No. 297,506. (No model.)

y To allwhom it may concern:

Beit known that I, ZEROY P. HOTOHKIss,

a citizen of the United States, residing at Oak Park, in Cookrcounty,Illinois, haveinvented certain new and useful Improvements in Telle'graphy and Telegraphic Instruments, of

which the following is a specification.

lIt is an object of my invention to provide' simple and reliablemechanism for transmit-- ting and receiving telegraphic signals. 1

vIn carrying out my invention I employpulsations of .uniform duration,but of different polarity, the letters of the alphabet being representedby various combinations of such pnl-,-

sations. When represented on paper,such pulsations may appear 'ras signsoccupying-two or p more parallel rows, the letters of the alphabet beingrepresented by various combinations of the'signs in the different rows.I also employ a transmitting-instrument to transmit electric pulsationsof diiierent polarity and a receiv- I ing-instrument to sort out suchpulsations. I

also combine'with my receiving-instrument in some cases a series ofpunches which record its signals, atthe same time automaticallypreparing a strip for automatic retransmissionof the same signals.v l

My transmitter may be operated mechanically by `means of a preparedstrip, and my receiver may be combined with devices for making a recordofthe pulsations.`

In the accompanying drawings I have shown a set of apparatus forpracticing telegraphy according to my invention. This apparatus isdesigned for use .withan alphabet represented by combinations of signsarranged in two parallel lines on a strip. I have made the signs in thelower row to take the place of the dots and those of the upper row totake the place of the dashes in the Morse or the Continental code.v Thisapparatus consists of a strip havlevers forming part of said transmitterand operated by said perforated strip for connecting one or theother'terminal of the main battery withthe line and the oppositeterminal with 'the ground, so as to transmit pulsations of differentpolarity over/the line, as required; a

.through the instrument.

, clockwork fory feeding saidperforatedv strip through said transmitterto operate the same; a fan-regulator for said clock-work, havinglanadjustable blade 'to adjust the speedioffsaid strument for receivingpulsations of different of the pulsation, (in some cases.` it maybeeX-pedient to use mere pencils or markers Iinstead polarity,`two punchesforniinglparft ofsaid rfe- ,n

ceiver and operated, respectively, by the-pulsaf tions of differentpolarity-to punch astrip in4 one row or another according tothe polarityof punches;) a feed mechanism to feed a strip through the said receiverfor the reception' of thesignals, and tworelays oppositely'polariz'ed toreceive andusort out the pulsationsandpass';

f them on to the proper'parts of the receiver."

In said drawings, Figure 1 is a transverse section .through thetransmitter, showing the clock-work in elevation. A vationof'transmitter and clock-work'. Fig. 3

shows a'strip punched with hole'sin-the combinations which'forrn theletters A B CD y l F G H I J,., the holes in the upper linetaking theplace of the dashes of the Morse alphabet and the holes in the lowerline taking'theplace of the dots. Fig/4 is a view of theV receiver,

relays, and vparts of the feed mechanism. Fig.

5 is a top diagram ofthe transmitter, showing also the main battery.Fig. 6 is asection of the receiver through thelin'e ofFig.-4. Fig. d 7is an elevation of the adjustable fan..A Fig.y 8 is a section throughline 8` 8 of Fig. 7. Y Fig.

9 is a section through Yline 9 9, Fig. k7.' Y y n, A is the perforatedstrip vfor operating the transmitter. f f f .B B arenile feed-rollersfor feeding thstrip I c e are the ratchet and pawl ofthe wind-f'ing-arbor.

F F G'YG are leverswhichpress upon/'the strip A, their ends f droppingintothe perfo. rations and rising outof them as. the v'stripAj passesthrough the instrument.

H Hare springs for causing and regulating" roo strip through thetransmitter; areceivlngfln-l 70 Fig. 2 is an endelery the pressure ofthe levers F G on the strip A.

The tension of the springs is regulated by the arbors I I.

J J is the main battery.

K is the ground of the sending-station.

L is the main line and M the ground at the receiving-station.

N is a contact-block on the ground-wire K.

F G are posts connected, respectively, to the levers F G, and eachconnected to one terminal of the main battery J.

O is a contact-lever connected with the terminal J of the main battery,as indicated in Fig. 5, and P is a similar contact-lever connected withthe opposite terminal, J of the main battery.

OP are springs pressing on the levers O P.

Q is another contact-lever connected to the main line. Y

R R are the blades of the regulating-fan, Figs. 7 and 8. v The blades RRf are arranged so as to slide upon each other and expose a greater orless surface to the resistance o'f the air, and thus constitute aneffective means for t t are the armature-levers of magnets T T. U is apunching-rod upheld byspringu and depressed by lever t when a currentpasses through magnet T.

U and u are a punching-rod and spring which bear the same relationr tomagnet T and lever t. Y

W is the die for the punching-rods U U'. DieW is in two parts, and thereceivingstrip Y is fed through between them by-the feed-rollers Z Z. j

In operation, a strip having been previously prepared similar to Fig. 3,said strip is en# tered between 4and fed through the transmitter by thefeed-rollers B B, and the speed of said rollers is adjusted by means ofthe fan R R. So long as the levers F G rest upon the solid portions ofthe strip A no current will pass over the main line; but when the end ofone of the levers, as F, drops into a perforation or indentation in thestrip the upper end of the lever (see Fig. 5) will move to the left.Contact-lever O, which has been held back by F, will move .forward andform a contact with N, thus connecting terminal J with ground K. As soonas this contact is made F will form a contact with lever Q and break theground-contact between Q and N, and a current will pass from terminal Jover main line L through relays S and S' to ground M.

- becomes a duplicate of strip A.

Relay S is so polarized that this current will i minal J is connected toground Kand terminall J/ to main line L, and relay S being polarizedagainst that current it does not act; but relay S makes the localcircuit X S T', andv punch U perforates strip Y. r In this manner stripY If, now, it be desired to send on the same message to an-v otherstation, strip Y may pass from the receiver through a secondarytransmitter ar- Vwhichit was originally sent from strip A. In

this manner I avoid the delay of first transcribing the message andthen-preparing an automatic sending-strip by hand before sending it on,as has heretofore been done. delay has in some cases amounted to two orthree hours or more, and has necessitated much additional labor and beena fruitful source of error.

Having thus described my invention and `a means for practicing it, I,claiml. The combination, substantially as set forth, of the perforatedsendingstrip A, the levers F G, connected with opposite terminals of themain battery, the levers O P, connected with opposite terminals of themain battery, the contact N, connected to the ground, and the contactsQ, connected to the line. l

2. In a system of telegraphy, in co1nbination with a telegraphic line, aduplex transmitting-instrument having levers, as F G, connected toopposite terminals of the battery and adapted to be operatedbyasending-strip, as A, a ground-contact, as N, contacts, as 0 l?,connected to opposite terminals of the battery, and a contact, as Q,connected to the line, whereby currents of opposite polarity may be sentover said line, and a duplex receiving-instrument having punches, as UU', and polarized relays, as S S, to separate the currents and deliverthose of one polarity to a magnet which operates one punch and those ofopposite polarity to a magnet which oper ates the other punch, whereby astrip may be perforated in duplication of the sending-strip,substantially as described.

3. The combination, in -a transmitting-iu strument adapted, inconnection with a perforated strip, to transmit electrical impulses ofdifferent polarity, of a mechanical stripfeeding mechanism and agoverning-fan coniposed of the two flat blades R R', said blades adaptedto slide one upon the other to adjust the speed of said feedingmechanism, substantiall y as and for the purpose set forth.

ZEROY P. HOTCHKISS.

XVitnesses:

FRANK M. SHERMAN, CARLOS J. WARD.

This

VIIO

